In this fanfiction, a great plot point might be the backstories of the twin dragons. Maybe they have a tragic past that led them to become opponents of Natsu. And Natsu's journey to understand their motives while fighting them can add depth to the story.
Well, one interesting plot point could be the unique magical battles. Natsu might use his fire - based magic in creative ways against the twin dragons' powers. Another could be the character development of Natsu as he faces this new and challenging duo.
Another plot point could be the relationship between Natsu and the twin dragons outside of the battle. There might be some backstory revealed about why they are fighting. It could be a case of misunderstanding, or they could be fighting over a powerful magical artifact that has significance to all of them.
Obviously, Natsu is one of the main characters. And then there are the twin dragons, though we don't know much about them yet from just this title. But they are sure to be important characters as they are in the 'vs' situation with Natsu.
Well, perhaps Natsu uses his powerful fire magic to take on the dragons one by one. He might start by finding a strategic location to face them, like on top of a large mountain where he has a better view. Then, he'd use his signature moves like Fire Dragon's Roar to blast groups of dragons at a time.
The main character is Natsu, who has a lot of fans in the Fairy Tail universe. The twin dragons are the antagonists in this fanfic. They could have a complex backstory that led them to face off against Natsu. Their powers and abilities would be designed to give Natsu a tough fight and keep the readers engaged.
Another plot could involve the twin dragons being cursed. They start to lose their dragon forms gradually and have to embark on a journey to find the cure. Along the way, they meet various characters who either help or hinder them, and they also learn more about their own history and the origin of the curse.
Lucy might also be an ally. She has her celestial spirits that could be a great help. For example, some of the spirits like Leo could be very powerful in combat against the dragons. Also, Erza would be a great addition. With her various armors and combat skills, she could hold off a large number of dragons while Natsu focuses on the more powerful ones among the 10000.
It could be that in this fanfiction, Natsu's dragon powers are enhanced in unique ways. For example, he might gain the ability to communicate with all types of dragons, not just Igneel. This could lead to him having to mediate between different dragon factions. And he may also have to hide his newfound nature from his friends at Fairy Tail for a while, creating some interesting internal conflict.
In many of these fanfictions, the way Natsu's dragon form affects his relationships is a big plot point. For example, his enemies might be more afraid of him, or his friends might see him in a new light. Also, the use of his dragon form in battles against powerful villains can be really engaging. His new abilities could give him an edge in combat that he didn't have before, like breathing fire in a more powerful way or having enhanced strength and speed.
In a fanfiction, the twin dragons could be given a prophecy that they are the only ones who can stop an upcoming cataclysmic event in the Fairy Tail universe. They then go on a journey to find the necessary elements or powers to fulfill the prophecy, facing many challenges along the way and growing stronger as they do so.
One possible interesting plot point could be Natsu's unique powers as the alpha dragon slayer. Maybe he has enhanced strength or special abilities that set him apart from other dragon slayers. For example, he could have a more powerful form of dragon roar.